The song moTumasTer from uDaan has a line that goes thus:
Chirkin ka muse hai,
paryaavaraN hi loose hai.
uDne na dena isse,
DoomsDay ka fuse hai.
Googling Chirkin brought to my notice the interesting fact that Chirkin was an Urdu poet who had (for lack of a better phrase) a toilet fixation.
Apparently the man was pissed off (pun intended) with his fellow shayars for not giving him much attention. So he went about writing shitty poetry. How and why he made that leap of logic - 'people ignore me so I must anger them by making poetry about their excretory habits' - is unknown to me at the moment.
Unless there have been earlier Hindi songs that have mentioned him, credit must be given to Anurag Kashyap for bringing Chirkin to our notice.
It seems, from elementary web-investigation that Diwan-e-Chirkin is now out of print. What a waste...